Conference Proceedings

Relationships between Antarctic sea-ice concentration, wind stress and temperature temporal variability, and their changes with distance from the coast

AB Watkins, I Simmonds, WF Budd (ed.)

ANNALS OF GLACIOLOGY, VOL 27, 1998 | INT GLACIOLOGICAL SOC | Published : 1998

Abstract

Daily Antarctic sea-ice concentration, wind and temperature data for the years 1988-94 were analyzed using Fourier techniques to determine their temporal spectra for three equal-length 'seasons'. The percentage of the total variance explained (VE) by each individual wave (i.e. frequency) was calculated, and spatial averages made over six latitudinal bands surrounding Antarctica. Comparisons of the sea-ice concentration, wind stress and surface air-temperature spectra showed sea-ice concentration VE has smallest, and wind-stress VE greatest, value in the synoptic time-scales. Conversely, in the 20-25 day window the wind-stress VE is smallest, and sea-ice concentration VE greatest. This 'red s..

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